CACLS.exe – Display or modify Access Control Lists (ACLs) for files and folders.

Access Control Lists apply only to files stored on an NTFS formatted drive, each ACL determines which users (or groups of users) can read or edit the file. When a new file is created it normally inherits ACL’s from the folder where it was created.

Syntax
CACLS pathname [options]
Key
options can be any combination of:
/T Search the pathname including all subfolders.
/E Edit ACL (leave existing rights unchanged)
/C Continue on access denied errors.
/G user:permission
Grant access rights, permision can be:
R Read
W Write
C Change (read/write)
F Full control
/R user
Revoke specified user's access rights (only valid with /E).
/P user:permission
Replace access rights, permission can be:
N None
R Read
W Write
C Change (read/write)
F Full control
/D user
Deny access to user.
In all the options above "user" can be a UserName
or a Workgroup (either local or global)
If a UserName or WGname includes spaces then it must
be surrounded with quotes e.g. "Authenticated Users"
If no options are specified CACLS will display the ACLs for the file(s)

Other features to try

Wildcards can be used to specify multiple files.
You can specify more than one user:permission in a single command.
The /D option will deny access to a user even if they belong to a group that does have access.

Using CACLS

The CACLS command does not provide a /Y switch to automatically answer ‘Y’ to the Y/N prompt. However, you can pipe the ‘Y’ character into the CACLS command using ECHO, use the following syntax:ECHO Y| CACLS /g <username>:<permission>

To edit a file you must have the “Change” ACL (or be the file’s owner)

To use the CACLS command and change an ACL requires “FULL Control”

File “Ownership” will always override all ACL’s – you always have Full Control over files that you create.

If CACLS is used without the /E switch all existing rights on [pathname] will be replaced, any attempt to use the /E switch to change a [user:permission] that already exists will raise an error. To be sure the CALCS command will work without errors use /E /R to remove ACL rights for the user concerned, then use /E to add the desired rights.

The /T option will only traverse subfolders belowthe current directory.

If no options are specified CACLS will display the current ACLs
e.g. To display the current folder
CACLS .
Display permissions for one file
CACLS MyFile.txt
Display permissions for multiple files
CACLS *.txt

Inherited folder permissions are displayed as:

OI - Object inherit - This folder and files. (no inheritance to subfolders)
CI - Container inherit - This folder and subfolders.
IO - Inherit only - The ACE does not apply to the current file/directory
These can be combined as folllows:
(OI)(CI) This folder, subfolders, and files.
(OI)(CI)(IO) Subfolders and files only.
(CI)(IO) Subfolders only.
(OI) (IO) Files only.

When cacls is applied to the current folder only there is no inheritance and so no output.

Errors when changing permissions

If a user or group has a permission on a file or folder and you grant a second permission to the same user/group on the same folder, NTFS will sometimes produce the error message “The parameter is incorrect” To fix this (or prevent it happening) revoke the permission first (/e /r) and then reapply (/e /g)

Is there a possibility to configure auditing for a specified folder using icacls?
I’m not talking about GPOs, just enabling auditing from advanced security settings for a folder.
Thank you in advance for your reply 😛

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I know this if off topic but I’m looking into starting my own blog and was curious what all is needed to get set up? I’m assuming having a blog like yours would cost a pretty penny?
I’m not very internet savvy so I’m not 100% certain.
Any tips or advice would be greatly appreciated.

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